, 2020 View of student operating spectrometer. (Verso: Activities / Miscellaneous / detailed description.)Slide no. 124.12, 139.12A student operating a Consolidated Electrodynamics Corp. Model 21-620.
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Mixing state of oxalic acid containing particles in the rural area of Pearl River Delta, China: implications for the formation mechanism of oxalic acid [PDF]
Atmospheric Chemistry and Physics, 2017 The formation of oxalic acid and its mixing state in atmospheric particulate matter (PM) were studied using a single-particle aerosol mass spectrometer (SPAMS) in the summer and winter of 2014 in Heshan, a supersite in the rural area of the Pearl ...
C. Cheng +27 more
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The nanopore mass spectrometer [PDF]
Review of Scientific Instruments, 2017 We report the design of a mass spectrometer featuring an ion source that delivers ions directly into high vacuum from liquid inside a capillary with a sub-micrometer-diameter tip. The surface tension of water and formamide is sufficient to maintain a stable interface with high vacuum at the tip, and the gas load from the interface is negligible, even ...
Joseph Bush +7 more
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Characteristics and mixing state of amine-containing particles at a rural site in the Pearl River Delta, China [PDF]
Atmospheric Chemistry and Physics, 2018 Particulate amines play an important role for the particle acidity and hygroscopicity and also contribute to secondary organic aerosol mass. We investigated the sources and mixing states of particulate amines using a single-particle aerosol mass ...
C. Cheng +23 more
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Transfer of organic carbon through marine water columns to sediments – insights from stable and radiocarbon isotopes of lipid biomarkers [PDF]
Biogeosciences, 2014 Compound-specific 13C and 14C compositions of diverse lipid biomarkers (fatty acids, alkenones, hydrocarbons, sterols and fatty alcohols) were measured in sinking particulate matter collected in sediment traps and from underlying surface sediments in the
S. G. Wakeham, A. P. McNichol
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Aerosol and Air Quality Research, 2020 To identify the characteristics, sources, and formation mechanisms of aerosol particles during pollution episodes in the Pearl River Delta, 24 sets of size-segregated samples were collected in Heshan during July 2014 and January 2015 using a 10-stage ...
Bo Huang +12 more
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Quantifying black carbon light absorption enhancement with a novel statistical approach [PDF]
Atmospheric Chemistry and Physics, 2018 Black carbon (BC) particles in the atmosphere can absorb more light when coated by non-absorbing or weakly absorbing materials during atmospheric aging, due to the lensing effect.
C. Wu +7 more
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Understanding the catalytic role of oxalic acid in SO3 hydration to form H2SO4 in the atmosphere [PDF]
Atmospheric Chemistry and Physics, 2019 The hydration of SO3 plays an important role in atmospheric sulfuric acid formation. Some atmospheric species can be involved in and facilitate the reaction.
G. Lv, X. Sun, C. Zhang, M. Li, M. Li
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The NEXT Project: Towards Production and Investigation of Neutron-Rich Heavy Nuclides
Atoms, 2022 The heaviest actinide elements are only accessible in accelerator-based experiments on a one-atom-at-a-time level. Usually, fusion–evaporation reactions are applied to reach these elements. However, access to the neutron-rich isotopes is limited.
Julia Even +11 more
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Impact of particle number and mass size distributions of major chemical components on particle mass scattering efficiency in urban Guangzhou in southern China [PDF]
Atmospheric Chemistry and Physics, 2019 To grasp the key factors affecting particle mass scattering efficiency (MSE), particle mass and number size distribution, PM2.5 and PM10 and their major chemical compositions, and the particle scattering coefficient (bsp) under dry conditions were ...
J. Tao +9 more
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